The ISSI family of matrix LED drivers has been evolving to meet ever-expanding customer requirements. The first-generation matrix driver evolved to the second generation by incorporating an enhanced I2C bus interface. The third generation built on the success of Gen 1 and 2 to support even more LEDs, include detection/reporting of LED open or short faults and simplifies RGB LED support.
ISSI’s family of matrix LED drivers have been a success in the RGB gaming keyboard space. These drivers expand the matrix LED market by introducing its advantages and features to the control panel segment: white goods appliances, mixer panel, small backlight, and automotive applications.
Features |
- Supply voltage range: 2.7 V to 5.5 V
- Current source outputs for row control:
- 8 (IS32FL3738)
- 4 (IS32FL3740)
- Programmable matrix size with deghost function:
- 6×8 (16 RGBs) (IS32FL3738)
- 3×4 (4 RGBs) (IS32FL3740)
- 1 MHz I²C-compatible interface
- Selectable 3 auto breath modes for each dot
- Switch current inputs for column scan control:
- 6 (IS32FL3738)
- 3 (IS32FL3740)
- Auto breath loop features interrupt pin inform MCU auto breath loop completed
- Auto breath offers128 steps gamma current, interrupt, and state lookup registers
|
|
- LEDs in dot matrix:
- Up to 48 (6×8) (IS32FL3738)
- Up to 12 (3×4) (IS32FL3740)
- 256 steps global current setting
- Individual on/off control
- Individual PWM control steps:
- 512 (IS32FL3738)
- 1024 (IS32FL3740)
- Individual auto breath mode select
- Individual open and short error detect function
- Cascade for synchronization of chips
- Package:
- eTSSOP-28 (IS32FL3738)
- eTSSOP-20 (IS32FL3740)
- Automotive AEC-Q100 qualified (IS32FL3738)
|
IS32FL3738 Applications |
|
IS32FL3740 Applications |
- Automotive clusters
- Dashboards
- Automotive interiors
|
|
- Mobile phones and other hand-held devices for LED display
- Gaming devices (keyboard, mouse, etc.)
- LED in white goods applications
|